YMGI WMMS-21CH Installer'S Instruction & User'S Manual Download Page 9

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INSTUCTIONS

1) Mounting Indoor & Outdoor 
    Units and Running 
    Piping/Wiring

Ruler (Not Shown)
Stud-Finder
Dry-Wall Saw
Electric Drill
3" Hole Saw
Drill Extension
Hammer Drill and Bit (Not Shown)
Measuring Tape
Level
Flash Light
Screw Driver (Phillps and Flat)
Hammer
Knife
Scissors
Goggled Glass
Mask
Gloves
Ladder

2) Refrigeration Related Work

RECOMMENDED TOOLS FOR INSTALLATION

3) Electrical Related Installation

Wire Cutter
Wire Stripper
Sharp Plier
Cable Ties
Black Tape for Electrical Use
lectrical Meter

Clamp Meter (Not Shown)
Manifold
Infra Thermometer (Not Shown)

4) Trial Running Units and 
Inspection

Individual Wrentch Set (Use Two at 
One Time)
Flare-Nut Tool Set (Not Shown)
Hex Head Allen Wrentch Sets (Metric 
and Imperial)
Brazing Rods and Brazing Torch 
Outfit for AC Application (Not Shown)
Brazing Flux
Nitrogen Cylinder for Positive 
Pressure Leakage Check (Not Shown)
Soap Bubble for Positive Pressure 
Leakage Check (Not Shown)
Vacuum Pump for Negative Pressure 
Leakage Check 
Helium Refrigerant Minor Leakage 
Check (Not Shown)
Manifold

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INSTUCTIONS

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YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !

INSTALLING OUTDOOR UNIT

LOCATION

Use bolts to secure the unit to a flat, solid floor.
When mounting the unit on a wall or the roof, 
make sure the support is firmly secured so that 
it cannot move in the event of intense 
vibrations or a strong wind.

* Do not install the outdoor unit in pits or air vents.

* Do not install the outdoor unit where it is exposed
  to direct sunlight.

INSTALLING THE PIPES

Use suitable connecting pipes and equipment 
for the refrigerant R410A.

The refrigerant pipes must not exceed the maximum 
lengths given in the technical data table.

Lag all the refrigerant pipes and joints.

Tighten the connections using two wrenches working in opposite directions.

Install the drain fitting and the drain hose (for model with heat pump only)

Condensation is produced and flows from the outdoor unit when the appliance is operating in the heating mode. 
In order not to disturb neighbors and to respect the environment, install a drain fitting and a drain hose to 
channel the condensate water. Install the drain fitting and rubber washer on the outdoor unit chassis and connect 
a drain hose to it as shown in the figure.

After having removed the packaging, check 
that the contents are intact and complete.

Handling must be done by suitably equipped 
qualified technical personnel using equipment 
that is suitable for the weight of the appliance.

The outdoor unit must always be kept upright.

HANDLING

INSTALLATION CLEARANCE

8" or above
Space to the cover

78" or above
(Air outlet side)

10" or above
Space to the wall

20" or above
Space to the wall

6" or above
(Air inlet side)

W

H

Summary of Contents for WMMS-21CH

Page 1: ...NY CHOIR OUTDOOR UNIT CH This product is designed and manufactured free from defects in material and workmanship for normal use and maintenance Installation operation maintenance and service shall fol...

Page 2: ...or your NEW home unit is not checked or used yet is closed whichever comes later by the owner s to Warranty Department YMGI Group POB 1559 O Fallon MO 63366 USA A full copy of Warranty Registration C...

Page 3: ...leakage before and after connecting them 28 Do you list the working details in the invoice and leave a copy to the customer 19 Did you charge the inter connection copper pipes and indoor unit with nit...

Page 4: ...operly can be more expensive than spending the little extra money that hiring the right contractor will cost Protect your investment and warranty eligibility by doing it right the first time THE FOLLO...

Page 5: ...ity to claim freight damage is lost and YMGI will not replace the unit on this basis Contact the distributor or YMGI report the damage by forwarding the marked delivery receipt copy and pictures Only...

Page 6: ...Service Center for Inspection and Repair and Authorization to Charge form 2 You will review the form and fill all fields appropriately sign and send back to the YMGI Group 3 Once the form has been co...

Page 7: ...rag wires too hard or use wire to hang or band or fasten anything Must turn off unit and disconnect electrical power before cleaning or servicing the unit Suggest to put a warning sign at the switch t...

Page 8: ...39K 7140 7820 9180 2200 1000 4650 12 12 18K 42K 7820 7820 8500 2200 1000 4650 9 9 9 9K 36K 6800 6800 6800 6800 2480 1000 4650 9 9 9 12K 39K 1750 1750 1750 2750 2480 1000 4650 9 9 12 12K 42K 1500 1500...

Page 9: ...a flat solid floor When mounting the unit on a wall or the roof make sure the support is firmly secured so that it cannot move in the event of intense vibrations or a strong wind Do not install the o...

Page 10: ...SIZES UNITS MADE AFTER 09 2012 Unit Connection Copper Pipe Sizes Min Max Length Elevation Wires from Outdoor to Each Indoor Unit Mini Wire Size from Outdoor to Circuit Breaker HVAC Type Circuit Break...

Page 11: ...reduce the bending of the piping line as much as possible so as to avoid possible negative impacts upon the performances of the units Make Oil trap if elevation drop difference is more than 25 as illu...

Page 12: ...N 1 2 3 N 1 2 3 D C B A Left Right YMGI Engineered Comfort Products for A Sustainable and Efficient Green World YMGI Engineered Comfort Products for A Sustainable and Efficient Green World ELECTRICAL...

Page 13: ...IRING DIAGRAMS WARNING L BN WH BL YE AC L1 AC N1 AC N3 AC L3 27RD 36RD PR N 26BK 35BK W38 W37 X5 X3 X4 U V W P N W39 AP2 AP3 AP4 PR N AC L1 AC N1 XH 3 20BN 21BU X6 X1 X101 X12 X14 19YEGN E X10 AC L X9...

Page 14: ...h Capacity Size Inch 17 7 21 7 15 4 18 3 320 360 09K 18K 18K 60K Made of stainless steel Model BRKT 0918 ST1 BRKT 1860 ST1 A B LBs Btu h Capacity Size Inch 17 7 21 7 15 4 18 3 320 360 09K 18K 18K 60K...

Page 15: ...sure the unit is ready for trial running check wires and pipes and air intake and discharge and power and thermostat and others necessary components liquid connecting pipe liquid closing valve gas co...

Page 16: ...ranty registration card If not filed or not filled completely or correctly your factory warranty may not be qualified Possible Problems or Consequences PRESSURE TABLES Warning R410A refrigerant bears...

Page 17: ...ments for the refrigerant R410A Do not use any refrigerant other than R410A Do not clean the unit using mineral oil WARRANTY AND TECH SUPPORT YMGI warrants to the purchaser owner s that YMGI products...

Page 18: ...t history No Date Service Maintenance Conducted Person Phone USER NOTES Put down whatever questions you have or problems you have seen as a unit history No Date Questions or Problems Remarks USER NOTE...

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